First Alert Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup – Pack of 6

First Alert Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup – Pack of 6

The First Alert SC9120B Hardwired Combination Smoke and Carbon Monoxide Alarm uses an electrochemical CO sensing technology and Ionization sensor for smoke detection. It includes a 9-volt battery for backup and continued function in the event of a power outage. This combination fire and CO detector features a test/silence button, tamper-resistant locking brackets. This smoke and CO detector can be connected to other compatible BRK and First Alert hardwired smoke and carbon monoxide detectors and comes equipped with easy-adapter plugs so there is no need to rewire. Its latching alarm indicator automatically identifies which unit initiated the alarm–even after the conditions that set off the alarm have subsided.